Multithreading in Java

A detailed guide on multithreading in Java, covering how to create and manage threads using `Thread` and `Runnable`, as well as how to synchronize data between threads.

In this article, we will explore how to handle multithreading in Java, including creating threads using Thread and Runnable. We will also learn how to synchronize threads to prevent data conflicts.

Java code

// Create a class implementing Runnable
class MyRunnable implements Runnable {
    private String threadName;

    public MyRunnable(String threadName) {
        this.threadName = threadName;
    }

    @Override
    public void run() {
        for (int i = 1; i <= 5; i++) {
            System.out.println(threadName + " is running: " + i);
            try {
                Thread.sleep(1000); // Pause for 1 second
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println(threadName + " completed.");
    }
}

public class MultiThreadExample {
    public static void main(String[] args) {
        Thread thread1 = new Thread(new MyRunnable("Thread 1"));
        Thread thread2 = new Thread(new MyRunnable("Thread 2"));

        thread1.start();
        thread2.start();
    }
}

Detailed explanation

• MyRunnable class: This class implements Runnable and defines the run method to specify the task that the thread will execute.
• run method: Prints a message indicating the thread is running, loops 5 times with a 1-second delay between each iteration.
• MultiThreadExample class: Creates two Thread objects (thread1 and thread2) and starts them using the start() method.

System Requirements:

• Java JDK 8 or later

How to install Java:

Download and install the Java Development Kit (JDK) from Oracle Java SE.

Tips:

• Avoid simultaneous access to shared variables between threads to prevent conflicts. Use the synchronized keyword if necessary.
• Use ExecutorService to manage a large number of threads more efficiently.

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